Mon Sep 09 15:16:51 UTC 2024: ## CSS Tic-Tac-Toe: An AI-Powered Game Built Entirely With Stylesheets
**Forget checkbox hacks!** A developer has created a fully functional, AI-powered Tic-Tac Toe game using nothing but CSS. This innovative approach utilizes the often overlooked `:target` pseudo-class to achieve this seemingly impossible feat.
The game works by generating a massive HTML document with every possible state of a Tic-Tac-Toe game. This document is powered by a custom Ruby implementation of the Minimax algorithm, which determines the optimal move for the AI opponent. The `:target` selector then displays the appropriate game state based on the user’s clicks.
This clever approach allows the AI to “cheat” by simply showing the pre-calculated outcome of each move, creating the illusion of a real-time opponent. However, due to the limitations of the algorithm, it turns out there are specific starting moves that allow players to consistently beat the “AI,” such as starting in the bottom left or top right corner.
This playful experiment demonstrates the power and flexibility of CSS, proving that even complex interactions can be achieved with stylesheets alone. It’s a testament to the creativity and ingenuity of web developers, pushing the boundaries of what’s possible with front-end technology.
The article encourages readers to explore the world of CSS hacks and learn more about the `:target` pseudo-class, a powerful tool often neglected in web development.
First Piper 